U.S. patent application number 10/987689 was filed with the patent office on 2006-05-18 for emergency unlocking device for locking and unlocking systems for swinging sliding doors, in particular of rail vehicles.
This patent application is currently assigned to Fahrzeugtechnik Dessau AG. Invention is credited to Reinhard Fronz, Wolfgang Steiniger.
Application Number | 20060101718 10/987689 |
Document ID | / |
Family ID | 36384647 |
Filed Date | 2006-05-18 |
United States Patent
Application |
20060101718 |
Kind Code |
A1 |
Fronz; Reinhard ; et
al. |
May 18, 2006 |
Emergency unlocking device for locking and unlocking systems for
swinging sliding doors, in particular of rail vehicles
Abstract
An emergency unlocking device for locking and unlocking systems
for swinging sliding doors, in particular of rail vehicles. The
emergency unlocking device has a traction device that engages on a
first spring-loaded pivoted lever that is connected via a second
lever to a third lever. The third lever is attached to the axial
shaft of a spring-loaded rotary magnet and has elongate holes in
which a bolt is displaceably mounted. When the traction device is
subjected to tensile stress, the bolt engages with a fourth lever
that is pivotably mounted on a shaft, and moves the fourth lever.
The fourth lever is operatively connected via a coupling rod and
deflection unit to a locking rod that moves the vertical direction.
A rod, via which a force component that brings about the locking
and unlocking of the door leaves can be applied, engages on the
fourth lever.
Inventors: |
Fronz; Reinhard; (Dessau,
DE) ; Steiniger; Wolfgang; (Geesthacht, DE) |
Correspondence
Address: |
LERNER GREENBERG STEMER LLP
P O BOX 2480
HOLLYWOOD
FL
33022-2480
US
|
Assignee: |
Fahrzeugtechnik Dessau AG
|
Family ID: |
36384647 |
Appl. No.: |
10/987689 |
Filed: |
November 12, 2004 |
Current U.S.
Class: |
49/141 |
Current CPC
Class: |
E05Y 2201/244 20130101;
E05B 83/363 20130101; B61D 19/023 20130101; E05B 81/25 20130101;
E05Y 2201/22 20130101; E05B 81/90 20130101; E05B 53/00 20130101;
E05B 79/20 20130101; E05B 81/14 20130101; B61D 19/008 20130101;
E05Y 2800/25 20130101 |
Class at
Publication: |
049/141 |
International
Class: |
E05B 65/10 20060101
E05B065/10 |
Claims
1. An emergency unlocking device for locking and unlocking systems
for swinging sliding doors, the emergency unlocking device
comprising: a spring-loaded rotary magnet having an axial shaft; a
bolt; a lever system having a first spring-loaded pivoted lever, a
second lever connected to said first spring-loaded pivoted lever, a
third lever connected to said second lever, and a fourth lever,
said third lever attached to said axial shaft of said spring-loaded
rotary magnet and having elongate holes formed therein for
displaceably mounting said bolt; a traction device for engaging on
said lever system, said traction device engages on said first
spring-loaded pivoted lever being connected through said second
lever to said third lever, said bolt moving into an engagement
position when said traction device is subjected to tensile stress;
a shaft, said fourth lever pivotably mounted on said shaft, said
shaft moving said fourth lever; horizontally disposed coupling
rods; locking rods which can be moved in a vertical direction;
deflection units, said fourth lever operatively connected through
said horizontally disposed coupling rods and said deflection units
to said locking rods; and a rod through which a force component
which brings about a locking and an unlocking of the swinging
sliding doors can be temporarily applied connected to said fourth
lever.
2. The emergency unlocking device according to claim 1, wherein:
said second lever is a bent clip which is held in said first
spring-loaded pivoted lever in a manner of a rotary joint so as to
be offset with respect to an axis of rotation of said first
spring-loaded pivoted lever, and said bolt is disposed in the
vertical direction on a protruding end of said bent clip and is
operatively connected to said third lever; said third lever has a
recess formed therein which serves as a horizontal guide and said
elongate holes are congruent elongate holes serving as a vertical
guide; and said fourth lever has, at an end pointing to said third
lever, a recess formed therein and selected from the group
consisting of a semicircular recess and a claw-shaped recess, said
recess temporarily engages with said bolt which is guided in said
third lever.
3. The emergency unlocking device according to claim 1, further
comprising a mounting selected from the group consisting of a
horizontally disposed plate and a carrier element; and wherein said
first spring-loaded pivoted lever, said third lever and said fourth
lever are embodied as pivoted levers mounted on said mounting.
4. The emergency unlocking device according to claim 2, wherein
said rod is a traction rod which is connected to said fourth lever,
opposite to said recess of said fourth lever, for transmitting a
movement force.
5. The emergency unlocking device according to claim 1, wherein:
said fourth lever has an axis of rotation and is rigidly connected
to said shaft; and said shaft is a vertical shaft lying on said
axis of rotation of said fourth lever.
6. The emergency unlocking device according to claim 1, further
comprising a further lever attached to said horizontally disposed
coupling rods for transmitting a movement force for the locking and
unlocking processes, said shaft having a lower end attached to said
further lever.
7. The emergency unlocking device according to claim 2, wherein for
decoupling the emergency unlocking device, said shaft of said
spring-loaded rotary magnet forming an axis of rotation for said
third lever, is disposed in the vertical direction, and in a state
in which voltage is applied to said spring-loaded rotary magnet,
said third lever moves in a counterclockwise direction and as a
result said bolt disengages from said claw-shaped recess of said
fourth lever.
8. The emergency unlocking device according to claim 1, further
comprising: a spring; a further bolt; and a mount having a guide in
which said traction device is held under tension by said spring,
said mount disposed in an upper region of a door frame of the
swinging sliding doors, said first spring-loaded pivoted lever
being a clip-shaped lever spaced apart from said guide and
pivotably mounted on said mount, said first spring-loaded pivoted
lever having arms connected at an upper end by said further bolt,
and said traction device and said second lever engage said further
bolt.
9. The emergency unlocking device according to claim 8, wherein
said second lever has a bent component piece and a straight
component piece, said bent component piece having an upper end
connected to said further bolt, said straight component piece
having an end mounted centrally on said bolt of said third
lever.
10. The emergency unlocking device according to claim 9, wherein
said third lever is a U-shaped lever having side walls with said
elongate holes formed therein, said side walls include a rear side
wall having an elongated section connected to said axial shaft of
said spring-loaded rotary magnet, and said spring-loaded rotary
magnet is disposed horizontally.
11. The emergency unlocking device according to claim 10, further
comprising: a mounting plate disposed on the upper region of the
door frame of the swinging sliding doors; a shaft horizontally
disposed on said mounting plate, said fourth lever is a hinged
plate mounted on said shaft, said hinged plate contains a lower
region having an end with an arcuate recess formed therein and a
slit-shaped cutout formed therein, said slit-shaped cutout
extending in a longitudinal direction and at least partially
engages said straight component piece of said third lever.
12. The emergency unlocking device according to claim 11, further
comprising a disk, said disk which, when said traction device is
subjected to tensile stress, engages with a section of said fourth
lever which delimits said arcuate recess and is disposed on said
bolt adjacent to said straight component piece of said third
lever.
13. The emergency unlocking device according to claim 12, wherein:
said hinged plate has an upper region and a lower region; said
coupling rods connected to said hinged plate and in said upper
region, said coupling rods being each vertically offset with
respect to one another in said lower region, said coupling rods
extend horizontally in opposite directions and are operatively
connected to said locking rods by said deflection units in a region
of vertical closing edges of the door frame.
14. The emergency unlocking device according to claim 13, further
comprising a motor having a rotatable housing; further comprising a
vertical shaft; further comprising a further plate rotatably
mounted in an eccentric fashion on said vertical shaft and having a
first end side and a second end side; further comprising a tappet
engaging said first side of said further plate, said tappet
connected to said rotatable housing of said motor; and wherein said
rod having a first end engaging said hinged plate directly opposite
a coupling point of one of said coupling rods and a second end
engaging on said second end side of said further plate.
15. The emergency unlocking device according claim 14, wherein for
decoupling the emergency unlocking device, a voltage is applied to
said spring-loaded rotary magnet and as a result said U-shaped
lever which is connected to said axial shaft of said spring-loaded
rotary magnet pivots in a clockwise direction and as a result said
bolt with said disk disengages from said arcuate recess of said
hinged plate.
16. The emergency unlocking device according claim 1, wherein the
swinging sliding doors are doors for rail vehicles.
Description
BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The invention relates to an emergency unlocking device for
locking and unlocking systems for swinging sliding doors, in
particular of rail vehicles.
[0002] Locking and unlocking systems for swinging sliding doors of
rail vehicles in which a plurality of identical functional elements
for locking and unlocking, which are connected to one another in an
articulated fashion by connecting rods, are disposed on at least
one vertical closing edge, are known. By moving the connecting rod,
the functional elements are moved into the locking and unlocking
position (see Published, Non-Prosecuted German Patent Applications
DE 38 08 390 A1 and DE 101 16 583 A1).
[0003] Emergency unlocking devices or emergency activators for
swinging sliding doors are known in a variety of embodiments.
Published, European Patent Application EP 0 335 860 A1 discloses an
emergency unlocking device in which a slide which engages on the
door drive and which is held by a securing device in a position
which corresponds to the final closed position of the door, the
holding device being capable of being manually activated, is
disposed in the region of the final closed position.
[0004] Published, European Patent Application EP 0 197 025 A1
describes an emergency unlocking device in which a latch on the
door leaf interacts with a bolt which is fixed to the door frame
and to which an unlocking lever which is acted on by a force source
is assigned. The emergency unlocking is triggered by a Bowden cable
using a lever system which is embodied as a toggle joint lever, is
coupled fixedly to the door frame and engages on the unlocking
lever.
[0005] An emergency unlocking process by decoupling the drive
connection between the electric motor and the rotary column by a
specific unlocking mechanism is known from Published, European
Patent Application EP 1 072 749 A2.
[0006] An emergency unlocking device (see German Patent DE 197 45
753 C2) with a second drive as a pneumatic actuator element in
which the emergency activation element is moved out of the locked
position into a position lying before the emergency dead center
position, out of which position the manual activation of the door
leaf takes place, is also known.
[0007] The known emergency unlocking systems are generally only
suitable for a specific locking and unlocking process. However, in
practice swinging sliding doors with different locking and
unlocking processes as well as associated emergency unlocking
processes are offered by one manufacture. This results in increased
expenditure and additional costs.
SUMMARY OF THE INVENTION
[0008] It is accordingly an object of the invention to provide an
emergency unlocking device for locking and unlocking systems for
swinging sliding doors, in particular of rail vehicles which
overcomes the above-mentioned disadvantages of the prior art
devices of this general type, which is simple and cost-effective
and is distinguished by a high level of reliability.
[0009] The emergency unlocking device is composed of a lever
system, having a first spring-loaded pivoted lever on which the
traction device, preferably a Bowden cable, engages. The lever is
connected via a second lever to a third lever, the third lever
being attached to the axial shaft of a spring-loaded rotary magnet
and has elongate holes. A bolt is displacably mounted in the
elongate holes and, when the traction device is subjected to
tensile stress, the bolt engages with a fourth lever which is
pivotably mounted on a shaft and moves the lever. The fourth lever
is operatively connected via at least one horizontally disposed
coupling rod and deflection unit to a locking rod that can be moved
in the vertical direction. A rod, via which the force component
which brings about the locking and unlocking of the door leaves can
be temporarily applied, also engages on the fourth lever. The
proposed lever system for emergency unlocking can be used as a
compact and separate assembly for different locking and unlocking
devices. A further advantage is that it takes up only a relatively
small installation space. The emergency unlocking device can be
activated manually by a Bowden cable which is attached to the first
pivoted lever. The complete lever system can be mounted on a
mounting plate or a carrier element. The fourth lever can
additionally also be used as a functional element for the locking
and unlocking device.
[0010] In a fourth variant, the second lever is embodied as a bent
clip that is secured in the first pivoted lever in the manner of a
rotary joint so as to be offset with respect to its axis of
rotation. The bolt, which is operatively connected to the third
lever that has a recess which serves as a horizontal guide and
congruent elongate holes as a vertical guide, is disposed at the
protruding end of the clip in the vertical direction. The fourth
lever has, at its end pointing to the third pivoted lever, a
semicircular or claw-shaped recess which temporarily engages with
the bolt which is guided in the second lever.
[0011] The first lever, the third lever and the fourth lever are
embodied as pivoted levers that are mounted on a horizontally
disposed plate or a carrier element.
[0012] The traction rod engages on the fourth pivoted lever,
opposite the recess, in order to transmit a movement force. The
fourth pivoted lever is rigidly connected, for example, to a
vertical shaft that lies on its axis of rotation. At the lower end
of the shaft it is possible to attach a lever to which at least one
coupling rod for transmitting a movement force for the locking and
unlocking processes is attached.
[0013] In order to decouple the emergency unlocking device
according to the first variant, the axis of rotation of the
spring-loaded rotary magnet is disposed in the vertical direction,
the third lever which is attached to the shaft being capable of
being moved in the counterclockwise direction in the state in which
voltage is applied to the rotary magnet, and as a result the bolt
disengages from the claw-shaped recess of the pivoted lever.
According to a further refinement variant of the emergency
unlocking device, a mount which has a guide in which the traction
device, the Bowden cable, is held under tension by a spring is
disposed in the upper region of the door frame, the first pivoted
lever being embodied as a clip-like lever at a distance from the
guide. The lever is pivotably mounted on the mount and the two arms
are connected at the upper end by a bolt on which the traction
device and the second lever engage. The second lever is composed of
a bent component piece and a straight component piece, the upper
end of the bent component piece being connected to the bolt, and
the end of the straight component piece being mounted centrally on
the bolt of the third lever. The third lever is embodied as a
U-shaped lever in whose side walls the elongate holes are located.
The rear side wall has a lengthened section which is connected to
the axial shaft of the rotary magnet, which shaft is disposed
horizontally. The fourth lever is embodied as a hinged plate which
is mounted on a mounting plate arranged in the upper region of the
door frame, on a horizontally arranged shaft, the hinged plate
having at the end in the lower region an arcuate recess and at the
lower end a slot-shaped cutout which extends in the longitudinal
direction and engages in the straight component piece of the second
lever. On the bolt of the third lever, in each case a disk is
disposed adjacent to the straight component piece of the second
lever, which disk engages, when the Bowden cable is activated, with
the section of the fourth lever which bounds the arcuate recess,
and moves the lever in the clockwise direction about its axis of
rotation. A coupling rod engages in the upper region and in the
lower region, in each case so as to be offset with respect to one
another, on the hinged plate, the fourth lever, the coupling rods
extending horizontally in opposite directions and being operatively
connected to the vertically movable locking rods by deflection
units in the region of the vertical closing edges. A further rod
engages on the hinged plate directly opposite the articulation
point of the upper coupling rod, the further rod engaging with its
opposite end on one of the end sides of a plate which is mounted so
as to be eccentrically rotatable on a vertical shaft. A tappet,
which is connected to the rotatable casing of the motor, engages on
another end side of this plate, preferably approximately diagonally
opposite.
[0014] In order to decouple the emergency unlocking variant, an
electrical voltage is applied to the spring-loaded rotary magnet,
as a result of which the U-shaped lever, which is connected to the
axial shaft of the rotary magnet, is pivoted in the clockwise
direction and the bolt with the disks is disengaged from the
arcuate recess of the hinged plate.
[0015] This embodiment variant for emergency unlocking with
decoupling permits simple mounting and has a high level of
functional reliability.
[0016] Other features which are considered as characteristic for
the invention are set forth in the appended claims.
[0017] Although the invention is illustrated and described herein
as embodied in an emergency unlocking device for locking and
unlocking systems for swinging sliding doors, in particular of rail
vehicles, it is nevertheless not intended to be limited to the
details shown, since various modifications and structural changes
may be made therein without departing from the spirit of the
invention and within the scope and range of equivalents of the
claims.
[0018] The construction and method of operation of the invention,
however, together with additional objects and advantages thereof
will be best understood from the following description of specific
embodiments when read in connection with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 is a diagrammatic, plan view of a two-wing swinging
sliding door in an installed and closed state, according to the
invention;
[0020] FIG. 2 is a frontal perspective view of a locking and
unlocking mechanism which is disposed on a door frame and has an
associated drive for the swinging sliding door according to FIG.
1;
[0021] FIG. 3 is an enlarged, perspective view of detail "X" shown
in FIG. 2;
[0022] FIG. 4 is an enlarged, perspective view of detail "Y" shown
in FIG. 2;
[0023] FIG. 5 is a perspective view of a further embodiment variant
of the emergency unlocking device with decoupling; and
[0024] FIG. 6 is a perspective view of the locking and unlocking
mechanism which is intended for the embodiment variant according to
FIG. 5 and is disposed on the door frame.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0025] Referring now to the figures of the drawing in detail and
first, particularly, to FIG. 1 thereof, there is shown a two-wing
swinging sliding door which closes a door opening and is composed
of two door leaves 1a and 1b. The outsides of which form, in a
closed state, a plane with the outer wall of the vehicle. The door
leaves 1a, 1b are attached in the upper region to roller carriages
which are guided in one curved roller guide 2a and 2b each. In
order to displace the door leaves 1a, 1b in the transverse and
longitudinal directions, toothed racks 3a and 3b are attached to
them in the upper and lower regions and are formed with curved
initial sections and engage with slewing gears 4a and 4b.
Furthermore, in the upper region of the wagon body there is a drive
unit 6 which mounted on a base plate 5 and is composed of a
horizontally disposed d.c. motor 6a which uses two conical gear
mechanisms 6b, 6c and a toothed belt gear mechanism 6d to bring
about an opposed movement at connecting shafts to crown gears 6e,
6f (FIG. 2). The drive torque is transmitted from the crown gears
6e, 6f of the conical gear mechanism 6b, 6c to the synchronizing
disks of the upper slewing gear mechanisms 4a, 4b by the toothed
belt gear mechanism 6d via tensioning pulleys 7 in each case. The
tensioning pulleys 7 are located on a tensioning device that is
attached to the base plate 5. The two conical gear mechanisms 6b,
6c are connected to one another via a clutch. The torque is
transmitted from the d.c. motor 6a to the transmission shaft by a
passive spring connection. The motor housing can thus be rotated
about its axis. The synchronously operating slewing gears that are
movably mounted on respective vertical connecting shafts 8a, 8b are
each disposed in a housing. The connecting shafts 8a, 8b are if
necessary adapted by articulated connections of the contour of the
outer wall of the vehicle. In the closed state of the door leaves
1a, 1b, the slewing gears 4a, 4b are in a home position in which
they extend approximately parallel to the longitudinal center axis
of the vehicle. In the home position, the supporting roller of the
slewing gear 4a, 4b lies in the radius of the curved initial
section of the toothed rack 3a, 3b. By rotation of the drive pinion
of the slewing gear 4a, 4b which engages with the toothed rack 3a,
3b, the drive pinion moves along the curved initial section and in
doing so presses the respective door leaf 1a, 1b transversely out
of the plane of the side wall--about the axis of the supporting
roller located opposite--and into the displacement position for the
subsequent longitudinal displacement of the door leaf. In the
process, one of the slewing gears 4a is swung about the vertical
axis in the clockwise direction through an angle of approximately
90.degree. as far as a stop, and the other slewing gear 4b is swung
in the opposite direction. The rotational movement of the drive
pinion is thus converted into a translatory movement transversely
and longitudinally with respect to the longitudinal center axis of
the vehicle, and as a result the respective door leaf 1a, 1b is
moved out of the plane of the side wall and at the same time
slightly in the longitudinal direction. The longitudinal
displacement of the door leaves 1a, 1b parallel to the outer wall
of the vehicle, until the door opening is completely cleared, is
brought about by the further rotational movement of the pinion of
the slewing gears 4a, 4b which engages with the straight section of
the toothed rack 3a, 3b. In a manner known per se, the door leaves
1a, 1b are attached to roller carriages which are guided in the
curved roller guides 2a, 2b which are attached to the wagon body in
a stationary fashion. The method of transverse and longitudinal
displacement of the door leaves explained above is known from
Published, Non-Prosecuted German Patent Application DE 101 16 580
A1.
[0026] In order to lock and unlock the door leaves 1a, 1b,
necessary locking elements 10 are located on the external vertical
longitudinal sides of the respective closing edges, as can be seen
in FIG. 2. The complete structure of the locking device which is
disposed on the inside of the door frame is shown in FIG. 3. On the
inside of the door leaves 1a, 1b there is at least one vertically
guided roller 9, which is held at a defined distance from the
inside of the door leaf 1a, 1b in a mount 9a. A corresponding
detail of the door leaf of a door 1 or the door leaf 1a, 1b with
the roller 9 is shown in FIG. 3. The actual locking element 10 is
disposed opposite on the inside of the door frame and is also shown
as an individual part in FIG. 3. A mount 11 which has a rear recess
11a within which the vertical connecting shaft 8a or 8b (not
illustrated in FIG. 3) extends is attached to the inside of the
door frame. A spring-loaded spagnolet or a latch 12 is mounted so
as to be capable of pivoting horizontally about an axis 12a of
rotation on a protruding section 11b, front left in the viewing
direction, of the mount 11. The swinging movement of the spagnolet
12 toward the outside is limited by a stop 11c. The spagnolet 12
has a protruding or projecting locking body or section 12b and
opposite this a lug 12c, the body or section 12b and the lug 12c
bounding a semicircular or claw-shaped recess 12d. The claw-shaped
recess 12d encloses the roller 9, which is disposed on the inside
of the door leaf 1a, during the locking process. The locking
section 12b is significantly longer than the lug 12c. The tension
spring (not shown in FIG. 3) for the spagnolet 12 is coupled to the
rear section of the mount 11 and ensures that, in the unlocked
state, the spagnolet 12 is swung against the stop 11c and is
located in a position that is ready for engagement for the
subsequent locking process. In order to finally lock the respective
door leaf in the closed position, a locking bracket 13 is disposed
on the mount 11. The locking bracket 13 is pivotably mounted with
its bent section 13a in a lateral component piece lid of the mount
11 by a horizontal bolt 13b. An upper limb 13c of the bracket 13
has, at its front end, a downwardly directed angled portion 13d on
which a movable roller 13f is mounted by a bolt 13e, the bolt 13e
being connected in the manner of a rotary joint by lever arm 13g to
a vertically disposed locking rod 14. A tension spring 13i, which
is connected to the mount 11, is coupled to a lower limb 13h of the
locking bracket 13. In order to lock the door leaf in the closed
position (in the position the locking section 12b of the spagnolet
12 is in a parallel position to the door leaf), the locking bracket
13 is swung about its axis 13b of rotation by the spring force of
the tension spring 13i, as a result of which the roller 13f is
moved directly in front of the locking section 12b of the spagnolet
12 and locks it. The locking process can additionally also be
supported by the triggered movement of the locking rod 14 in the
downward direction.
[0027] Release of the lock, that is to say unlocking, is not
brought about again until the locking bracket 13 is swung in the
clockwise direction into home position by activation of the locking
rod 14 in the opposite, upward direction, and the spagnolet 12 can
easily be moved out of the region with the locking bracket 14 in
the outward direction (in the clockwise direction) by a swinging
movement.
[0028] At the front end of the lower limb 13h of the locking
bracket 13 there are two bores 13j which lie on a common axis and
they have the purpose of receiving a bolt for attaching a bar for
transmitting the vertical movement to a further locking element for
the locking and unlocking processes.
[0029] The method of operation of the lock is as follows.
[0030] During the closing movement of the door or the door leaves
1a, 1b, the vertically guided roller 9 which is located on the
inside of the door engages with the semicircular or claw-shaped
recess 12d of the spagnolet 12. The spagnolet 12 is swung further
in the direction of the center of the door opening, in the
counterclockwise direction, by the pressing movement of the door in
the direction of the closing edge that is brought about by the
guide. In this context, the roller 13f of the locking bracket 13 is
in contact with the upper face of the locking section 12b and rolls
on it. The locking section 12b is swung into the opening of the
bracket 13. After a position parallel to the door or door leaf is
reached, the locking bracket 13 is swung downward about its axis
13b of rotation by the applied spring force, and the roller 13f
moves directly in front of the locking section 12b. In this state,
the final locking position is reached.
[0031] On the rotary column or the vertical connecting shaft 8, 8a,
8b, a pin (not shown in the drawing), which is moved along with the
rotary column during the opening of the door or door leaves and
locks the spagnolet 12 in the opened position of the door or door
leaves so that the latter can no longer manually be moved back
again into its locked position, is additionally disposed. The
necessary activation elements for the locking and unlocking
including the manually trippable emergency unlocking process and
decoupling of the emergency unlocking device are mounted on a
mounting plate 17 which is disposed underneath the base plate 5 and
which is attached to the base plate 5 via non-illustrated spacer
elements, see FIGS. 1, 2 and 4.
[0032] The reaction force of the drive motor 6a, whose motor
housing can be rotated about its axis, can be used to trigger the
necessary movement for the unlocking process directly before the
opening movement of the door leaves or the support for the locking
process during the closing movement of the door leaves 1a, 1b.
[0033] The rotary movement of the housing of the motor 6a that is
disposed in the horizontal installation position is transmitted to
a segment plate 18 that is connected to the motor housing. The
segment plate 18 is guided in a lateral recess of the mounting
plate 17 and projects beyond the mounting plate 17. The rotary
movement of the segment plate 18 is limited by two stops 19 that
are attached to the mounting plate 17 (see FIG. 4). A traction rod
20 is attached in the manner of a rotary joint to the upwardly
projecting section of the segment plate 18, the traction rod 20
transmits the rotary movement of the motor housing to a horizontal
lever 21 which is attached to the mounting plate 17 in the manner
of a rotary joint. The swinging lever 21 is connected at its axis
of rotation to a rigid, vertically downwardly directed shaft 22
that is stressed by a rotary spring 28. A lever 23, to which the
movement of the traction rod 20 is transmitted via the swinging
lever 21 and the shaft 22, is attached centrally to the lower end
of the shaft 22. Horizontally disposed coupling rods 24 and 25 are
coupled to the two ends of the lever 23 and the rotary movements of
the lever 23 is converted into linear movements by the rods 24, 25.
The coupling rods 24 and 25 which are disposed offset with respect
to one another extend, as shown in FIGS. 1 and 2, into the region
of the outer closing edges of the door frame, and are bent
downwards at their ends and coupled to triangular hinged plates 26,
27 which are rotatably mounted in the upper region of the wagon
body. The respective locking rods 14, by which the movement of the
locking brackets 13 is triggered, are coupled to the third pivot
point of the hinged plates 26 or 27.
[0034] In the closed state of the door leaves 1a, 1b, the door
leaves are also locked to the two outer closing edges. The
spagnolet 12 is in engagement with the rollers 9 which are disposed
on the inside of the door leaves, and the locking brackets 13 are
pulled downwards by the spring force of the traction springs 13i
which engage on them, and the rollers 13f are located directly
before the locking section 12b of the spagnolets 12. The swinging
lever 21 that is attached to the mounting plate 17 is secured in
the locked position by the rotary spring 28.
[0035] The unlocking process is initiated by the door opening
instruction. The drive energy which is generated when the d.c.
motor 6a is activated is transmitted by the conical gear mechanisms
6b, 6c, the toothed belt gear mechanism and the slewing gears 4a,
4b to the toothed racks 3a, 3b which are attached to the door
leaves 1a, 1b. The slewing gears 4a, 4b generate, in conjunction
with the outwardly bent section of the toothed racks 3a, 3b, a
force that counteracts the locking process, constituting the
blocking process by the locked door leaves. The blocking process
generates a reaction torque at the d.c. motor 6a, as a result of
which the housing of the motor 6a rotates about the drive axis. The
rotary movement is transmitted to the traction rod 20 via the
segment plate 18, and the pivoted lever 21 is rotated in the
counterclockwise direction, overcoming the applied spring force.
The rotary movement of the pivoted lever 21 is transmitted via the
vertical shaft 22 to the lever 23, as a result of whose rotary
movement in the counterclockwise direction the coupling rods 24 and
25 which are coupled to the latter execute a linear pulling
movement and as a result the respective vertical locking rods 14
are raised by the hinged plates 26 and 27, and the locking brackets
13 swing upward about their axis 13b of rotation and clear the
spagnolet 12 or its locking section 12b. With the blocking of the
movement of the door leaves 1a, 1b having now been released, the
transverse displacement and subsequent longitudinal displacement of
the door leaves is completed by the combination of the slewing
gear/toothed rack and the drive energy of the motor. In the
process, the rollers 9 on the inside of the door disengage from the
spagnolet 12 which rotates in the clockwise direction as far as the
stop 11c as a result of the applied spring force.
[0036] During the closing process, the locking takes place in the
reverse order, the locking movement being brought about primarily
by the spring force that is applied to the locking bracket 13.
[0037] A first embodiment variant of the emergency unlocking
process according to the invention will be explained in more detail
below. The activation of the emergency unlocking device is carried
out either by an emergency unlocking handle with a square latching
device or an emergency unlocking button. In this context it is also
possible to integrate the external emergency unlocking device in
the door leaf. A Bowden cable is attached in each case as a
traction device to the emergency activation device. The Bowden
cables 29, 30, one of which is intended for the inside of the door
and the other for the outside of the door, are guided as far as the
mounting plate 17 and are held in guides 32 in a mount 31 which is
attached to the mounting plate 17, and are attached to a first,
spring-loaded pivoted lever 33 and stressed by it. The axis of
rotation of the pivoted lever 33 is indicated by 33a, and a rotary
spring by 33b. On the pivoted lever 33, a second lever 34, which is
embodied as a bent clip, is secured in the manner of a rotary joint
about an axis 34a of rotation, offset with respect to the pivoting
axis 33a. At the end of the clip 34 which lies opposite the axis
34a of rotation, a vertically oriented bolt 35, which is
operatively connected to a third lever 36, is disposed so as to be
capable of rotating in the clip 34. The lever 36 is attached to a
shaft 36a that forms the vertical axis of rotation, so as to be
capable of rotating on the mounting plate 17. The lever 36 has a
cutout that serves as a horizontal guide 36b. In the upper and
lower component pieces of the lever 36 which bound the cutout,
there are two congruent elongate holes 36c in which the bolt 35 of
the clip 34 is displaceably guided. The two elongate holes 36c thus
form a vertical guide for the bolts 35 of the clip 34. The
spring-loaded, fourth pivoted lever 21 which is disposed, as
already explained, on the mounting plate 17 and is operatively
connected to the traction rod 20, has, at its end lying opposite
the coupling point of the traction rod 20, a semicircular or
claw-shaped recess 21a which engages with the bolt 35, both in the
locked and unlocked state of the lock. In order to ensure that the
bolt 35 engages in the recess 21a, the lever 36 is operatively
connected to the spring of a rotary magnet 37.
[0038] Furthermore, a decoupling device for the emergency lock is
also provided. For this purpose, the spring-loaded rotary magnet 37
is located on the downwardly extended shaft 36a of the lever 36.
The emergency unlocking process is decoupled by a signal which is
triggered by the door controller and by which the rotary magnet is
supplied with electrical voltage and rotates the shaft 36, and thus
lever 36, in the counterclockwise direction.
[0039] The method of operation of the emergency unlocking device
and the decoupling device is as follows.
[0040] By manually activating the emergency handle on the inside or
outside of one of the doors, the pivoted lever 33 is rotated in the
clockwise direction by a respective Bowden cable, and the clip 34
is thus moved along and the bolt 35 which is positively guided in
the elongate holes 36c is displaced in the direction indicated by
an arrow A. Since the bolt 35 engages with the pivoted lever 21,
the latter is rotated in the counterclockwise direction about its
pivoting axis, and thus moves the coupling rods 24 and 25 by the
shaft 22 and the lever 23, the coupling rods 24, 25 triggering the
unlocking by the rods 14, as already explained in detail.
[0041] In order to bring about decoupling, the rotary magnet 37 is
supplied with voltage and rotates the shaft 36a, and thus the lever
36 in the counterclockwise direction, as a result of which the bolt
35 disengages from the claw-shaped recess 21a of the pivoted lever
21. In this state, the emergency unlocking device is decoupled, and
when the emergency unlocking device is activated the pivoted lever
21 is no longer moved and the locked state continues.
[0042] If the emergency unlocking device is to be activated again,
the supply of voltage to the rotary magnet 27 is interrupted and
the lever 36 is moved back again into its home position by the
applied spring force, and in the process the bolt 35 engages again
with the claw-shaped recess 21a of the pivoted lever 21.
[0043] FIGS. 5 and 6 show a further embodiment variant of the
emergency unlocking device with decoupling facility.
[0044] The Bowden cable 41 is guided in a guide 42 on a mount 40
that is disposed in the upper region of the door frame on a
non-illustrated carrier element, and the Bowden cable 41 is
attached to an attachment nipple 43. The latter engages on a first
lever 45 that is pivotably mounted on the mount 40 and is embodied
as a bracket-like lever. A compression spring 44, which presses
against the pivoted lever 45 and that surrounds the Bowden cable 41
is disposed between the guide 42 and the attachment nipple 43. A
second lever 46, which is composed of a bent component piece 46a
and straight component piece 46b engages on an upper bolt 45a of
the pivoted lever 45, in addition to the attachment nipple 43. The
end of the straight component piece 46b is connected to a bolt 47a
that is guided by its two ends in congruent elongate holes 47b of a
third lever 47 which has a U-shaped cross section. The elongate
holes 47b are located in the two side walls 47c, 47d of the lever
47. The one side wall 47d of the U-shaped lever 47 has an extended
section which is connected to the axial shaft of a spring-loaded
rotary magnet 48. In each case a disk 49 is disposed on the bolt
47a between the straight component piece 46b of the lever 46 and
the side walls 47c, 47d of the U-shaped lever 47. A fourth lever
50, which is embodied as a hinged plate, is mounted on a
horizontally disposed shaft 51 on a mounting plate in the upper
region of the door frame. The hinged plate 50 has, at its front end
side which points in the direction of the bolt 47a, an arcuate
recess 50a in the lower region. The section which bounds the
arcuate recess 50a engages, during the unlocking process, with the
disks 49 which are disposed on the bolt 47a of the lever 47. The
lower end section of the hinged plate 50 has a slot-like cutout 50b
that extends in the longitudinal direction and which is slightly
larger than the wall thickness of the straight component piece 46b
of the lever 46 so that secure and reliable contact between the
disks 49 and the hinged plate 50 is ensured. The slot-like recess
50b also serves as a guide for the straight component piece 46b of
the lever 46. A coupling rod 52 and 53 engages on each of the upper
and lower regions of the hinged plate 50 opposite one another by
ball and socket joints, the coupling rods 52 and 53 being
operatively connected to the vertical locking rods 14 via
corresponding deflection units 58 (FIG. 6). The two coupling rods
52, 53 that extend in the opposite direction are disposed offset to
one another vertically in terms of their height. The coupling point
for the coupling rod 53 on the hinged plate 50 is located directly
above the arcuate recess 50a. A rod 54 via which the necessary
movement force for triggering the locking and unlocking is
transmitted also engages on the upper end of the hinged plate 50,
opposite the coupling rod 52, by a ball and socket joint. The rod
54 is connected at its end opposite the hinged plate 50 to one of
the end sides of an eccentrically mounted plate 55, as shown in
FIG. 6. The plate 55 is pivotably mounted on a vertical shaft 56. A
tappet 57 engages on the plate 55 approximately diagonally opposite
the coupling point of the rod 54, the tappet 57 being made to move
to and fro starting from the direction of rotary movement of the
motor housing. The tappet 57 transmits this movement to the
pivotable plate 55 that moves about its axis 56 of rotation, as a
result of which the rod 54 triggers the movement of the hinged
plate 50 (FIG. 5).
[0045] The method of operation of the emergency unlocking device is
as follows.
[0046] The manual activation of the emergency unlocking switch
causes the pivoted lever 45 to be pulled in the direction of the
guide 42 by the Bowden cable 41, counter to the effect of the
compression spring. The movement is transmitted to the lever 46
which also moves the bolt 47a, guided in the elongate holes 47b of
the U-shaped lever 47, as a result of which the disks 49 engage
with the hinged plate 50 (in the arcuate recess 50a) and the hinged
plate 50 is swung in the clockwise direction. The locking rods 14
are raised by the coupling rods 52 and 53 and the deflection units
58 and the locking of the door or door leaves is triggered. A
signal that indicates to the train driver on a display that the
emergency unlocking device has been activated is triggered by a
monitoring switch 59 that is attached to the mount 40. The two
deflection units 58 are composed of an angular piece 58a with a
horizontal shaft 58b, to each of whose ends a lever 58c, 58d is
attached. The lever 58c is connected to the locking rod 14 via a
ball and socket joint. The other lever 58d has, at its upwardly
pointing end, a protruding semicircular lug which engages in a
corresponding recess in a further lever 58e which is rotatably
mounted on the vertical limb of the angular piece 58a, and is
connected by its other end to the respective coupling rod 52, 53 by
a ball and socket joint. The horizontal movement of the coupling
rods 52, 53 is converted into a vertical movement of the locking
rods 14 by the deflection units 58.
[0047] In order to decouple the emergency unlocking device, the
rotary magnet 48 is supplied with electrical voltage and turns the
shaft, and thus the lever 47, in the clockwise direction, as a
result of which the disks 49 disengage from the arcuate recess 50a
of the U-shaped lever 50, as shown in FIG. 5. In this state, the
emergency unlocking device is decoupled, and when the emergency
unlocking device is activated the hinged plate 50 is no longer
moved and the locked state continues.
[0048] If the emergency unlocking device is operated again, the
supply voltage to the rotary magnet 48 is disconnected and the
lever 47 is moved back into its home position again by the applied
spring force.
[0049] The embodiment variant explained above has the advantage
that it requires a small amount of mounting expenditure and all the
movable rods are only loaded in a tensile fashion.
* * * * *